Eyring Low Profile Antenna 301A (ELPA 301A)
p/n: 200-4467© Brooke Clarke 2013
As part of my interest in HF antennas, and Near Vertical Incidence Sky-wave (NVIS) propagation in particular I got one of these when it became available. This is a wire antenna which is a common way to make HF antennas, but not the only method.
This particular antenna was made for Tadiran in Israel (Wiki) and I received it from Israel in the factory box, so it's a New In Box (NIB) product.
It was packed on June 18, 1992 and shipped the next day.
The key selling point is that the antenna can be erected where it's very close to (or in some cases buried in) the ground.
This antenna can be used in the military VHF low band (30 to 90 MHz) in a way similar to the OE-303, i.e. as a very directional (high gain) antenna.
Eyering is no longer in business, they were FSCM 53730.
Photographs
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Fig 1 NIB 15" x 7" x 5" as Received
Fig 2 Carry bag & Packing List
Fig 4 Instructions Front
Fig 5 Instructions Back
Fig 6 Feed (Matching Network)
& 2 ea antenna reels
Major Components
Description
Qty
p/n
Element Feed Unit
Matching Unit
Fig 7
1
200-4032-01
Antenna Reel Assy
Fig 9
2
200-4033-01
Stakes, tri-fold
Fig 14
12
200-4508
Slide Hammer
Fig 11
1
200-3930
Stake Extractor
Fig 12
1
200-3939
Cable, Coax 10 Meter
Fig 13
1
200-4027-16
Bag, 301 Kit
1
200-4509
Packing List
1
Instruction Card
1
Patents
On the carry bag is patent number 4750001.
4743917Apparatus and method for a portable roll-out antenna, May 10, 1988, Brian L. Grose, Craig M. Huntsman (Eyring Research Institute, Inc.), 343/877, 242/388.6
4750001Portable roll-out antenna system and method , Jun 7, 1988, Brian L. Grose, Craig M. Huntsman (Eyring Research Institute, Inc.), 343/877
4829310Wireless communication system using current formed underground vertical plane polarized antennas, May 9, 1989, Ferril A. Losee, (Eyring Research Institute, Inc.), 43/719, 343/847 - virtural underground loop antenna
4839661Guided wave antenna system and method, Jun 13, 1989, Ferril A. Losee, (Eyring Research Institute, Inc.), 43/719, 343/847
Using the antenna when buried underground.4825224
Broad band impedance matching system and method for low-profile antennas, Apr 25, 1989, Brian L. Grose, Orval N. Skousen
(Eyring Research Institute, Inc.), 43/860, 343/822 -
Related
Antennas
Propagation
AS-2259 - NVIS antenna
AT-984/G - Reel of wire intended for VHF half Rombic antenna
B&W Broadband Folded Dipole Antennas - T2FD type
SORAK - Kit that makes a number of antennas (both HF and VHF low band)
GRA-4 - Two mast kit, no antenna
GRA-12 - Three mast kit, no antenna
GRA-50 - Variable Dipole Kit with no masts
OE-303 1/2 Rhombic VHF Low Band AntennaLinks
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page created 27 July 2013
